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Point-type carbon nanotube (CNT) field emitters have attracted much interest because they can promise a focused electron beam spot with a high emission current. The point-type CNT field emitters can be used for diverse applications such as x-ray tubes, electron beam sources and microwave sources. Here, we report fabrication and emission performance of various point-type field emitters made by CNTs.
We present field emission properties of CNT line emitters fabricated by a unique method. Two dimensional electron beam sheet was achieved by the line emitters. The CNT line emitters exhibited high emission current density over 10.7 A/cm2 at the electric field of 2.8 V/μm and excellent emission stability during 24 hr. Moreover, emission pattern showed a very low spreading angle of emitted electrons...
We present field emission properties of CNT point emitters fabricated by a unique method. The CNT point emitters exhibited high emission current up to 2.3 mA at the electric field of 1.6 V/µm and excellent emission stability during 24 h. Moreover, emission pattern showed a very low spreading angle of emitted electrons at the anode electrode. The high emission performance was attributed to the well-focused...
Flexible field emitters were fabricated with carbon nanotube (CNT) film, and their field emission properties under various bending conditions were investigated. The flexible CNT field emitters exhibited a good field emission performance. Moreover, they showed a stable and uniform emission after bending, indicating that the stress has no remarkable effect on the field emission properties of the flexible...
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